| 000 | nam a22 4500 | ||
|---|---|---|---|
| 020 | _a | ||
| 245 | _aPumping station for irrigation and drainage in China | ||
| 260 |
_aBeijmg. _bAgicultural publishing house. _c1990 |
||
| 710 | _aDepartment of Rural Irrigation Drainage and Soil Conservation Ministry of water resources | ||
| 942 | _c22 | ||
| 999 |
_c6628 _d6628 |
||